Gasoline demand in California has decreased over the years as people have been trying to avoid increased gas prices, says an energy analyst.

“The fall isn’t much of a mystery,” David Isaak, a principal consultant at FACTS Global Energy, said in an interview with “The biggest factor has to be the switch to more efficient vehicles.”

Isaak also attributes the decrease in demand to more carpooling, using buses and trains, and more “stay at home nights.”

According to the AAA, regular gas prices in Los Angeles Tuesday cost $4.095 per gallon, which was up 36 cents from last year.

From 2006 to 2012 there has been a 2.9 percent drop in vehicle miles traveled, according to the U.S. Energy Information Administration, which explains part of the decline in gasoline demand.